cmparts: Remove trackball references in LED settings strings

    <string name="title_notifications_items_text">Items text color</string>

    <string name="title_notifications_items_time">Items time color</string>

    <!-- User interface: Trackball notifcations -->

    <string name="trackball_notifications_title">Trackball Notification Colors</string>

    <!-- User interface: LED notifcations -->

    <string name="trackball_notifications_title">LED notification Colors</string>

    <string name="dialog_color_trackball">Choose a color</string>

    <string name="dialog_blink_trackball">Choose a blink rate</string>

    <string name="color_trackball_flash_title">Flash color</string>